Apparatus for trimming or paring the edges of louis heels



Feb. 11, 1930.

F. H. POCHIN ET AL APPARATUS FOR TRIMMING OR PARING THE EDGES OF LOUIS HEELS WWWWWWWWUWWU Patented Feb. 11, 1930 UNITED STATES PATENT OFFICE FRANK HOWARD POCHIN, HORACE STANLEY POCHIN, AND CHARLES HENRY MILL- MAN, F LEICESTER, ENGLAND APPARATUS FOR TRIP/[MING OR PARING THE EDGES OF LOUIS HEELS Application filed June 7, 1927, Serial No. 197,037, and in Great Britain June 8, 1927.

In the manufacture of boots and shoes (both hereinafter included in the term shoes) to which Louis heels are attached, the said heels prior to their attachment to the shoe, have applied to them at the sides and back a coating of celluloid or other enamel or a covering of celluloid, leather, or other material, to impart to the heel a neat appearance.

The breast of the heel is also covered but this is usually effected after attachment of the heel to the shoe, and for covering it at this part the shoe sole is split from the heel end forwards so as to form a thin apron or depending flap which is secured by an ad hcsive against the breast face of the heel.

The apron is usually of greater width than the heel breast so that the marginal portions of the apron project beyond the side edges of the heel and it is necessary to trim off their projecting marginal portions either flush with *he sides of the heel or so as to leave a slight rim or ridge projecting above the surface at each side, the latter form being usually referred to as a Vienna edge.

The appearance of the finished shoe Will to a degree be marred and its sale value correspondingly reduced if this trimming has not been neatly and evenly effected or if the coati or covering on the sides of the heel be cut into and the main object of our invention is the provision of a simple tool or apparatus whereby the marginal edges of the apron that project beyond the sides of the heels may be trimmed off not only very neatly and either flush with the sides of the heels or to produce a Vienna edge, but also much more expeditiously than when the trimming is effected by means of a hand knife, and further, whereby risk of cutting into the coating or covering at the sides of the heel is practically eliminated.

To these ends an important feature of our invention is a trin'nning tool or apparatus adapted for hand manipulation and comprising a rotary cutter and two guides or gauges that are supported in more or less close proximity to the cutter and which are adjustable in relation to each other one of the gauges or guides being arranged for engagement against the apron and the other against the side of the heel.

The foregoing and other objects and features of our invention will now be described with reference to a preferred constructional form or embodiment of said features to which particular form the scope of our invention is not, however, limited.

ln the accompanying drawing Fig. 1 is a side eleva ion and Fig. 2 a plan view of the complete apparatus. Fig. 3 is a front elevation showing the rotary cutter and the two gauges or guides and Fig. 4 a detail to be referred to.

In said drawing the reference numeral 6 indicates a tubular frame or holder suitable for being grasped in one hand by the operator and which holder is provided with beari Is to support a spindle 8 that is connected to a suitable source of power by a flexible conncctionpreferably of the Bowden wire type-said flexible connecting shaft or wire being enclosed if desired in a flexible tubular protector.

At. the front end of the spindle 8 we provide a rotary dished cutter 10 to which very rapid rotary motion is imparted and which cutter is to trim off the apron by moving it in the direction of the edge of the side of the heel at its junction with the heel breast, the shoe and the holder being manipulated relatively to each other according to the variations in the curvature of the heel breast, so that the cutting edge throughout the trimming cutting operation is maintained perpcndicular to the plane of the breast flap.

In order that the operator, whilst moving the utter and shoe relatively to each other as aforesaid. may trim the breast flap either flush with or so as to produce a Vienna edge, we provide two guides 12 and 14, both located in front of the rotating cutter, the former to engage against the heel breast and the latter against the side of the heel, the guides being relatively positioned so that the marginal projecting portion of the apron may enter between them and will then be trimmed as the cutter and guides are moved along the edge of the heel. Said guides are adjustable so that by setting the guide 14 up or down proximity to the rotary c tore the ad ustment referred to will usuallyin relation to the cutter 10 the latter will trim the edge either flush with the side of the heel (or with the covering material thereon) or so as to leave Vienna edge projection.

To support the guides or gauges 12, 14, we provide the holder 6 with a collar 16 that has an upwardly projecting lug 18 to which we secure a guide carrier 21') by means of a screw threaded stem 22 and nuts 241, 2G, 28, the stem at one end screwing into the carrier 20 and being locked by the lock-nut 2t, and at the other end passing through an aperture in the lug 1S and being locked by the locknuts 26, 28.

The front end of the carrier is provided with two bosses 30, 32. Each boss has a vertical aperture through which the stems of the guides 12, 14, respectively pass, there being also provided screwed nuts 3&1, to engage said stcms above the bosses 30, 32, and set screws 38, 40, to secure the gauges or guides in adjusted position. Lock-nuts such as 42 may also be provided.

By slacking back the lock-nuts 2G, 28, the position of the carrier 20 may be varied so that the guides or gauges 12, 14, maybe moved forward or backward. It is usually desirable however to maintain the guides in close or it) and therebe made only when the cutter 10 has been shortened by re-sharpening.

In addition to their adjustability as already describcd it is desirable that the two guides 12, 14-, may be adjuiitcu so that their active ends are a greater or a less distance apart. For this purpose the carrier has the part M thereof which supports the breast guit e 12 movable in relation to the main part of the carrier. A simple arrangement being to pivot the part 4% to the main part at 46 and to regulate or adjust the part it (and consequently the guide 12) by a screw 48 and a spring 50, this arrangement ensuring that the guide 12 will be held a des red minimum distance from the guide 14 hi t permitting the guide 12 to yield and move tarther from the guide 14 in case the nature of the work requires this. This yielding support 12 also facilitates placing the guides in position when the trimming operation is about to be commenced.

it happens at times when the heel breast having the cemented apron or fiap applied to it and the apron is held pressed against the breast as already stated, that at one or other part the projecting marginal portion of the apron is bent over and against the marginal portion of the side of the heel and becomes cemented to this. In order to detach any such bent ever part of the apron from the side of the heel we may provide the gauge or guide 14 that to engage against the side of the heel, with a lip or plough (see Fig.

4) which is arranged so that it engages between the bent over marginal portion of the apron and the side of the heel and to raise the said marginal portion therefrom and present it in the path of the rotary cutter.

The guides or gauges 12, 14, although they may be made as practically straight rods are in the example shown as curved rods. This is done for two reasons, viz: The guide 12 is made curved so that there is ample space between the guides for the escape of the cuttings or trimmings and also so as to form a protecting shield to the lower part of the rotary cutter. The other guide or gauge 14 is made curved so that it acts as a protecting shield in front of the cutter 10 at the part where there is the greater risk of the side of the heel being accidentally brought against it and it also provides for the tree escape oi" the trimmings.

Vhen about to trim the apron, the operator will adjust particularly the guide or gauge 14 accordingly whether the apron is to be trimmed flush or with a Vienna edge. He then grasps the shoe in one hand (he may hold the shoe down on a readily movable support) and in the other hand he holds the tool and having started the cutter in ro tation he presents the tool to one end of the apron (either the end adjacent to the bottom of the heel or the end adjacent to the waist of the shoe) so presenting it that the marginal portion of the apron enters between the two guides 12, 14, and the plane of the cutting edge of the rotary cutter is perpendicular to the plane of the apron. He then moves the tool along the edge of too heel and manipulates this and the shoe so as to maintain the plane of the cutter perpendicular to the plane of the apron and this will be trimmed very neatly and very expeditiously.

It a single tool only is employed it will be desirable to begin the trimming operation at the bottom of the heel on one side and the top on the other side so that in both cases the rotary cutter will be moving in the direction to press the apron against the heel breast. As some operators consider it desirable always to commence at the same end, usually the bottom end, of the heel, we may provide two tools in which the position of the two guides are relatively reversed, one tool being adapted for trimming the right hand edge and the other the left hand edge, the trimming in both cases beginning at the same end of the heel and the cutter in both cases rotating in the direction to press the apron against the heel breast.

What we claim is:

1. A heel edge trimming tool comprising a holder adapted for manipulation by the operator in relation to the work, two guides carried by said holder and a trimming cutter also carried by said holder.

2. A heel edge trimming tool comprising a holder adapted for manipulation by the operator in relation to the work, two guides carried by said holder, and a rotary trimming cutter also carried by said holder.

3. A heel edge trimming tool comprising a holder adapted for manipulation by the operator in relation to the work, two guides arranged for relative adjustment and carried by the holder, and a rotary trimming cutter carried by the holder and located in proximity to the guides.

4-. A heel edge trimming tool comprising a holder adapted for manipulation by the operator in relation to the work, a rotary trimming cutter, and two guides, the latter being arranged to form guards to the cutter.

5. A heel edge trimming tool comprising a holder, a trimming cutter mounted on said holder and arranged for rotary movement, a guide to engage against the breast face of the heel, and a guide to engage against the side of the heel, the heel engaging ends of the guides being located in near proximity to each other and to the cutter.

6. A heel edge trimming tool comprising a holder adapted for manipulation by the operator in relation to the work, a spindle arranged for rotary movement and carried by and projecting forwardly from said holder, a dished cutter on said spindle, a bracket carried by said holder, and two guides supported by the bracket and positioned in close proximity to the cutter.

7. A heel edge trimming tool comprising a holder, a rotary cutter carried by said holder, a guide to engage against the breast face of the heel, and a second guide to engage against the side face of the heel, and means to adjust both guides simultaneously in relation to the cutter in the direction parallel to the axis of rotation thereof.

8. A heel edge trimming tool comprising a holder, a rotary cutter carried by said hold-er, and two guides carried by said holder and adapted to engage relatively angularly dis posed faces of the heel, one of which guides is yieldingly movable in relation to the other guide.

9. A heel edge trimming tool comprising a holder adapted for manipulation by the operator in relation to the work, a rotary cut tor carried by said holder. and two guides arranged for adjustment in relation to the axis of rotation of the cutter.

10. A heel edge trimming tool con'iprisiug a holder, a rotary cutter carried by said holder, and two guides arranged for independent adjustment in the direction perpendicular to the axis of rotation of the cutter and simultaneous adjustment in the direction parallel to said axis.

ll. A heel edge trimming tool comprising a holder, two guides arranged for engagementaga nst relatively angularly disposed sides of the heel and to receive the marginal portion of the apron between them, and a rotary dished cutter the cutting edge of which is perpendicular to the plane of said marginal portion as the tool is moved along the edge of constantly varying contour of the heel Whilst the guides are maintained in engagement With said two faces.

12. A heel edge trimming tool according to claim 11 in which one of the guides is adjustable in relation to the axis of the rotary cutter to determine Whether the apron is trimmed flush with or to produce a Vienna edge on the side of the heel.

13 For a heel edge trimming tool comprising a holder, a carrier supported by said holder and provided with a movable arm, a guide on the carrier and a second guide on said arm, and means to regulate the position of the arm in relation to the carrier.

14. For a heel edge trimming tool a holder, a carrier supported by said holder and provided 'ith a movable arm, a spring tending to move the arm in one direction and an adjustable stop to limit its movement in said direction, and guides on the carrier and on the arm.

15. A heel edge trimming tool comprising a holder, a guide to engage against the breast face of the heel, a second guide to engage against the side of the heel and to engage against the projecting marginal portion of the apron, and a rotary dished cutter that has its cutting edge perpendicular to the plane of the apron throughout the movement of the tool along the heel edge of varying contour whilst the guides are maintained in engagement respectively with the breast face and side face of the heel and With the two opposite faces of the apron.

16. A heel edge trimming tool comprising a holder, a trimming cutter arranged for rotary movement and supported by said holder, two guides also supported by said holder in proximity to the cutter, and means whereby said guides may be adjusted in the direction parallel to the axis of rotation of the cutter.

17. A heel edge trimming tool comprising a holder, a trimming cutter arranged for rotary movement and carried by said holder, two guides also carried by said holder in proximity to the cutter, means for adjusting said guides independently in the direction perpendicular to the axis of rotation of the cutter, and means for adjusting said guides simultaneously in the direction parallel to said axis.

18. A heel edge trimming tool comprising a holder, a trimming cutter arranged for rotary movement and carried by said holder, and two guides also carried by said holder one of which guides is yieldingly movable in relation to the other.

19. A heel edge trimming tool comprising a holder, a trimming cutter arranged for no tary movement and carried by said holder, two guides also carried by said. holder one of which guides is yieldingly movable in relation to other other, and means for adjusting said guides independently in the direction perpendicular to the axis of rotation of said cutter.

20. A heel edge trimming tool comprising a holder, a trimming cutter arranged for rotary movement and carried by said holder, two guides also carried by said holder, one of which guides is yieldingly movable in relation to the other, means for adjusting said guides independently in the direction perpendicular to the axis of rotation of the cutter and means for adjusting said guides simultaneously in the direction parallel to said axis.

21. A heel edge trimming tool comprising a holder, a rotary trimming cutter arranged for rotary movement and carried by said holder, two guides the ends of which are adapted to engage relatively angularly disposed faces of the heel, means to adjust the distance apart of said ends, and means to adjust said guide simultaneously in the direction parallel to the axis of rotation of the cutter.

22. A heel edge trimming tool comprising a holder, a trimming cutter arranged for rotary movement and carried by said holder, two guides the lower ends of which are adapted to engage relatively angularly disposed faces of the heel, one of which guides is yieldingly movable in relation to the other, and means to adjust the distance apart of said ends.

23. A heel edge trimming tool comprising a holder, a trimming cutter arranged for rotary movement and carried by said holder, two guides also carried by said holder the ends of which are adaptedto engage relatively angularly disposed faces of the heel, means to adjust the distance apart of said ends, means to adjust said guides independently in the direction perpendicular to the axis of rotation of the cutter, and means to adjust the guides simultaneously in the direction parallel to said axis.

24. A heel edge trimming tool comprising a holder, a trimming cutter arranged for rotary movement and carried by said holder, two guides also carried by said holder the lower ends of which are adapted to engage relatively angularly disposed faces of the heel and one of which guides is yieldingly movable in relation to the other, means to adjust the distance apart of said ends, means to adjust said guides independently in the direction perpendicular to the axis of rotation of the cutter, and means to adjust the guides simultaneously in the direction parallel to said axis.

25. A heel edge trimming tool comprising a holder, a spindle supported for rotary movement by said holder, a trimming cutter supported on said spindle, a bracket on said holder, a guide carrier supported by said bracket, means to adjust said carrier in the direction parallel to the axis of rotation of the spindle, and two guides carried by said carrier in proximity to the cutter.

26. A heel edge trimming tool comprising a holder, a spindle supported by said holder, a trimming cutter carried on said spindle, a bracket on said holder, a guide carrier supported by said bracket, means to adjust said carrier in the direction parallel to the axis of rotation of the spindle, two guides supported by said carrier in proximity to the cutter, and means to adjust said guides independently in the direction perpendicular to said axis.

27. A heel edge trimming tool comprising a holder, a trimming cutter carried by said holder, a guide on said holder, and a plough on said guide adapted to engage the side of a heel beneath the apron edge and to lift said edge and present it in the path of the cutter.

28. A heel edge trimming tool comprising a holder, a trimming cutter carried by said holder, a guide carried by said holder and adapted to be engaged against the breast face of a heel, a second guide also carried by said holder, and a plough on said second guide adapted to engage the side of a heel beneath the apron edge and to lift said edge and present it in the path of the cutter.

29. A heel edge trimming tool comprising a holder, a rotary trimming cutter carried by said holder, a guide carried by said holder and adapted to be engaged against the breast face of a heel, a second guide also carried by said holder, a plough on said second guide adapted to engage the side of a heel beneath the apron edge to lift said edge and present it in the path of the cutter, and means to adjust said guides independently in the direction perpendicular to the axis of rotation of the cutter.

FRANK HOlVARD POCHIN. HORACE STANLEY POCHIN. CHARLES HENRY MILLMAN. 

